Electric circuit



Jan. 22, 1935. H. KOCH ELECTRIC CIRCUIT Filed Feb. 24, 1932 ParenteelJan. z2, 193s y UNITED 4vSTATES aATENT OFFICE ELECTRIC CIRCUIT HansKoch, Magdeburg-Buckau, Germany Application February 24, 1932, SerialNo. 594,869

2 Claims.

This invention relates to the distant control of electric circuits byprimary and secondary circuits, it being immaterial how far theswitching elements are remote from the arrangement 5 to be controlledevidently connected therewith by wires. The fundamental novelty of theinvention is based on the fact that an impulse sent by a secondarycircuit, that is the momentary closing of a secondary circuit, switchesout and renders currentless the primary circuit and is only placed undercurrent at the moment of switching.

In the drawing an embodiment of the invention suitable for wirelessreceiving is illustrated diagrammatically in the only gure of theaccompanying drawing.

A Wire 19a, 19b extends from the terminal 1 to a switching in switch Efrom which a further wire 19a, 19d leads to one pole of a relay 20 theother pole of which is connected to the terminal 2 by means. of a wire19e. 'I'hus the battery 18 is connected up in a circuit withl theswitching in switch E and the relay 20, so that if the switch Eis-actuated this circuit is closed and the relay 20 energized.

0n the relay 20 four blade springs 36, 37, 38, 39 are xed mutuallyinsulated at one end, the springs 36 and 38 having near their other endcontacts 40 and 41 respectively.

A two-armed lever 33, 34 is oscillatably mounted on the relay 20 and itsarm 34 carries an insulated pin 35 extending freely through apertures inthe blade springs 36 and 37 and consequently insulated therefrom.

When the relay 20 is excited the arm 33 o f this two-armed lever isattracted causing its arm 34 to swing upwards so that the end of thisarm presses the spring blade 36 upwards bringing its contact 40 againstthe blade spring 37 whereas the pin 35 lifts the blade spring 38 awayfrom the spring 37 so that the spring 37 cannot contact with the spring38 and at the same time presses the contact 41 against the spring 39.

The blade spring 39 is, however, connected by a wire 19k to the terminal4 connected to the receiving set by a wire and the blade spring 38 isconnected by a wire 19s to the other terminal 3 connected to thereceiving set by the wire 14 so that when the contact 41 is closed thecircuit of the receiving set is closed.

The wire 19c is also connected to the blade spring 36 by wires 19i and19h, whereas the contact spring 37 is connected tothe terminal 1 of thebattery by a wire 19g a normalLv closed blade spring contact 29, 31, 30land a wire 19f, so that when the switching in press-button E is releasedand the wires 19b and 19c become currentless, the relay 20 stillreceives current through 19j', 30, 31,

29, 19g, 37, 40, 36, 19h, 191', 19d and remains excited and keeps thereceiving set circuit closed. 5

The wire 191 is extended by a Wire m to the terminal 5 and the terminal6 is connected by a wire 191' with the wire 19j leading to the terminall of the battery. A further switching in press button switch in afurther extension conl0 nection may be connected up with the terminals5, 6 by wires 10 and 11. If this press button switch is depressed therelay 20 will also be excited by current supplied thereto through 19],19r, 6, 1l, the further extension press button 15 switch not shown, 10,5, 19m, 191', 19d-and when this further extension press button is'released the relay will also remain under current `as above described.

The above mentioned blade springs 29 and 30 20 are also mounted mutuallyinsulated on a second relay 22, together with a third spring 32 which isdead and only intended for emergency use. As above stated a contact 31on the blade spring 29 normally bears against the spring 80.

A second circuit 21 is connected with the terminals 1 and 2 of thebattery 18. This second circuit is a switching out circuit comprising awire 21a leading from the terminal 2 to a switching out press-buttonswitch A whence wires 2lb, 30 21e lead to one pole oi' the second relay22, the other pole of the relay 22 being connected to terminal 1 by awire 21d. Thus if the switch A is actuated the relay 22 will be excited.A twoarmed lever 23, 25 is oscillatably mounted about 35 a support 27 onthe relay 22 so that when the relay is excited the arm 23 of this leverwill be attracted causing the arm 25 to swing upwards. A pin 28 ismounted on theA arm 25 and extends with clearance through a hole in theblade spring 29 so that when this arm 25 swings upwards the pin 28 willpush the spring 30 away from the contact 31 thereby breaking thecircuit19 at this point. Thus the wire 19g becomes currentless andcurrent no longer flows through the springs 37, 36, the wire 19h, l9i,19d to the relay 20 which consequently ceases to attract the lever 33with the result that it swings back into its inoperative positionbreaking the contact 40 and lowering the pin 35 so that the contact 41is also broken, 50 and the receiving set circuit interrupted.

If a further extension connection is provided its switching out pressbutton not shown is connected to the terminals 7 and 8 and the terminalboard 9 by wires 12 and 13. 'Ihe terminal 8 is 55 connected directlywith the terminal 2 of the battery by a wire 21j, whereas the terminal 7is connected with the wire 21e by a wire 21g. If this further switchingout press button is depressed when the relay 20 is under current and thereceiving set circuit is closed as above described, current will flowfrom the battery to the relay 22 along the following path 21f, 8, 13 tothe switch, thence over 12, 7, 21g, 21o and 21d. Thus the relay will bealso excited and attract the armature 23, 25 thereby interrupting thecurrent supply to the relay 20 in the manner above described.

It is evident that the switching in and switching out press-buttons ofany number of extension connections may be connected up in parallel tothe wires 10, 11 and 12, 13 respectively so that if any of these furtherpress-buttons are depressed the relays in the circuits shown will beactuated in the manner above described.

I claim:

1. A remote control for a wireless receiving set, comprising incombination a receiving set circuit battery, a switching in circuitconnected up with said battery, a relay connected up in said switchingin circuit, a contact device controlled by said relay and connected upin said receiving set circuit, means for momentarily closing saidswitching in circuit to excite said relay to actuate said contact deviceand close said receiving set circuit, a second contact device connectedwith said battery, said switching in circuit and with said relay throughthe intermediaryof said iirst mentioned contact device to maintain saidrelay in excited condition, a switching out circuit connected with saidbattery, a second relay carrying said second contact device andconnected up in said switching out circuit, and means for momentarilyclosing said switching out circuit to excite said second relay toactuate said second contact device and interrupt the current supply tosaid rst relay and break said receiving set circuit.

2. A remote control for a wireless receiving set, comprising incombination a receiving set circuit, a battery, a switching in currentconnected with said battery, a relay connected up in said circuit, apress button switching in switch connected up in said circuit andadapted to momentarily close said circuit to excite said relay, fourmutually insulated blade springs arranged in pairs on said relay thelower pair of springs having registering apertures and the upper pairconnected up in said receiving set circuit, a relay armature in the formof a two-armed lever pivotally mounted on said relay one arm of saidarmature adapted to be attracted by said relay and the other arm adaptedto press against the lowermost of said springs and press same intocontact with the next higher spring, a pin insulated on said second armextending with clearance through the apertures in the lower pair ofsprings and press together the upper pair of springs to close saidreceiving set circuit, a retaining circuit connected with said switchingin circuit and to said lower pair of springs, a pair of normally closedcontact springs in said retaining circuit adapted to maintain said relayunder circuit through the intermediary of said lower pair of contactsprings after the contacting of said lower springs, a switching outcircuit connected with said battery, a second relay in said switching Iout circuit, a switching out switch in said switching out-circuitadapted to close this circuit to excite said second relay, an armatureon said second relay adapted to be attracted by said second relay andbreak the contact between said pair of normally closed contacts to breaksaid maintaining circuit to interrupt said receiving set circuit throughthe intermediary of said upper pair of contact springs. i

HANS KOCH.

